ruscal syncs your local Outlook calendar (read via MAPI) to a Google Calendar of your choice. Events appear in the Google calendar with the organiser surfaced in the description, recurring series expanded, and cancelled occurrences mirrored — so you stop missing meetings on whatever device your Google calendar is on.
What's new in 1.2.3
docs(readme): note that ruscal requires Outlook Classic (new Outlook has no MAPI)
ci: static-link the MSVC C runtime so the binary runs without VCRedist
ci: auto-patch Architecture x86->x64 after winget-releaser fires
Yes. ruscal is free and open-source software released under the MIT license.
What is the latest version of ruscal?
The latest version is 1.2.3, released on Jun 30, 2026.
Is it safe to download ruscal?
The download button links to the official installer published on github.com, the same file Windows Package Manager installs. You can verify the downloaded file by comparing its SHA-256 checksum with 5d3575eb3378373d16a5e692c587c36b99347e283a17ad41c81f5cc17ea85488.
Which Windows versions does ruscal support?
ruscal runs on Windows and is available for 64-bit (x64) systems.
How do I install ruscal silently?
Run the offline installer with "ruscal-setup.exe" /VERYSILENT /SUPPRESSMSGBOXES /NORESTART /SP-, or install it with Windows Package Manager: winget install --id=tieo.ruscal -e --silent.
How do I uninstall ruscal?
Open Settings › Apps › Installed apps, find ruscal and select Uninstall. From the command line, run winget uninstall --id=tieo.ruscal -e.
Alternatives to ruscal
Other Project Management programs for Windows from different developers.